The Premorbid Adjustment Scale (PAS): its use in an Australian study

Area of Science:

• Psychiatry
• Psychometrics
• Clinical Psychology

Background:

• The Premorbid Adjustment Scale (PAS) is a newly developed instrument for assessing premorbid functioning in schizophrenia.
• The National Institute of Mental Health (NIMH) developed the PAS for schizophrenia research and clinical practice.

Purpose of the Study:

• To describe the use of the PAS in an Australian study.
• To evaluate the discriminative validity and reliability of the PAS.
• To assess the predictive validity of the PAS regarding hospitalization duration in schizophrenia.

Main Methods:

• The Premorbid Adjustment Scale (PAS) was administered.
• Total PAS scores were analyzed to discriminate between schizophrenic and manic patients.
• Test-retest reliability of the PAS was assessed in schizophrenic patients.
• The relationship between PAS scores and duration of hospitalization was examined in schizophrenic patients.

Main Results:

• Total PAS scores effectively discriminated between patients with schizophrenia and those with mania.
• The PAS demonstrated good test-retest reliability among schizophrenic patients.
• PAS scores did not predict the duration of hospitalization for schizophrenic patients, consistent with previous North American findings.

Conclusions:

• The Premorbid Adjustment Scale (PAS) shows potential for differentiating schizophrenia from mania and has good reliability.
• The PAS's ability to predict hospitalization duration in schizophrenia requires further investigation.
• Additional research is necessary to establish the PAS as a validated instrument for schizophrenia research and clinical application.